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Gas Separation: Processes > Selective Diffusion Of Gases > Selective Diffusion Of Gases Through Substantially Solid Barrier (e.g., Semipermeable Membrane, Etc.) Selective Diffusion Of Gases Through Substantially Solid Barrier (e.g., Semipermeable Membrane, Etc.)Selective Diffusion Of Gases Through Substantially Solid Barrier (e.g., Semipermeable Membrane, Etc.) patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/08/07 - 20070256558 - Ejector to reduce permeate backpressure of air separation module An air separation system includes an ejector for controlling a pressure differential across an air separation module and a valve for controlling air flow through the ejector such that airflow through the ejector is discontinued when not required to maintain the desired pressure differential across the air separation module. ... 08/30/07 - 20070199445 - Novel polyimide based mixed matrix composite membranes A polyimide MMC membrane useful for the production of oxygen-enriched air or nitrogen-enriched-air, for the separation of carbon dioxide from hydrocarbons or nitrogen, and the separation of helium or hydrogen from various streams. Membranes of polyimide polymers, such as polyimide polymers sold under the tradename P-84, are mixed with molecular ... 07/12/07 - 20070157803 - Nitrogen inerting system A gas separation module 25 is disclosed for separating air into nitrogen 27 and oxygen 26 enriched fractions. The nitrogen enriched fraction 27 may be used to inert an atmosphere inside a fuel tank 32. The air is separated into nitrogen 27 and oxygen 26 enriched fractions by providing a ... 06/28/07 - 20070144344 - Gas separation using molecular sieve ssz-74 The present invention relates to new crystalline molecular sieve SSZ-74 prepared using a hexamethylene-1,6-bis-(N-methyl-N-pyrrolidinium)dication as a structure-directing agent, and its use in gas separations. ... 06/21/07 - 20070137477 - Metal oxide nanoparticle filled polymers The present invention includes a method, composition and apparatus for forming a nanoparticle filled polymer having similar gas selectivity and greater gas permeability than the native polymer. The nanoparticle filled polymer includes one or more polymeric materials and one or more nanoparticles dispersed within the one or more polymeric materials ... 02/22/07 - 20070039464 - Dry gas production systems for pressurizing a space and methods of operating such systems to produce a dry gas stream A dry gas production system for supplying dry gas to a pressurized space, such as an underground conduit or an aerial cable. The dry gas production system may include a modular enclosure that has a removable support to which multiple dry gas production modules are mounted. The support may be ... 02/22/07 - 20070039463 - Method and device for size-separating particles present in a fluid A method and device for separating particles in a fluid according to size is disclosed. The method includes the step of generating at least one recirculating flow by transporting a fluid containing the particles across a profiled surface carrying at least two adjacent regions of different depth which form a ... 02/15/07 - 20070034080 - Method for separating gases from a gas mixture and device for applying such a method Improved method for separating gases from a gas mixture, whereby the gas mixture to be treated is led through a membrane separator (3) by means of a compressor installation (2) and whereby the compressed gas mixture to be treated is cooled in the compressor installation (2), among others in order ... 01/25/07 - 20070017366 - Pleated construction for effecting gas transfer membrane A contactor for effecting passage through a membrane from a first fluid a second fluid is provided. A cylindrical pleated membrane cartridge is positioned within a housing having a first inlet and a first outlet from a first fluid and at lest a second outlet for a second fluid. At ... 12/07/06 - 20060272499 - Gas filtration media A gas filtration media comprises a microporous membrane. The microporous membrane includes an ultrahigh molecular weight polyethylene (UHMWPE), an inorganic material, wherein the ratio of inorganic material to polymer is in the range of 4:1 to 1:4, and less than 30% by weight of the membrane being a processing oil. ... 11/09/06 - 20060249018 - Nucleophilic modifier functionalized and/or crosslinked solvent-resistant polymide and copolymer membranes A solvent-resistant polyimide membrane comprising a cross-linked polyimide homopolymer or copolymer is described. The homopolymer or the copolymer is functionalized with a nucleophilic modifier, and the membrane has suitable permeability and is resistant to solvents. In addition, a process of preparing polyimide membrane free of macrovoids is also described. ... 10/26/06 - 20060236857 - Membranes for selective gas separation The present invention relates to the use of a hydrophilic, biocompatible and biodegradable elastomer membrane or film for the selective separation of a gas mixture. Accordingly, processes for selective gas separation of a gas mixture are provided in which a gas mixture is contacted with such a membrane such that ... 10/19/06 - 20060230926 - Composite material, in particular composite membrane, and process for the production of the same Composite materials are provided. A representative material is configured as a composite membrane for gas separation, vapor separation, or pervaporation. The composite membrane comprises at least a first polymer and a second polymer. Processes for the production of composite materials, in particular composite membranes, also are provided. ... 10/19/06 - 20060230925 - Portable air separation/air dehydration system A portable system for air separation or air dehydration, or both, is carried on a truck or equivalent vehicle. The air separation system includes, at a minimum, a feed compressor and a gas separation membrane. The air dehydration system includes a feed compressor and an air dehydration membrane. The feed ... 09/07/06 - 20060196355 - Separation membrane by controlled annealing of polyimide polymers This abstract discusses membranes needed to separate fluids for the production of oxygen-enriched air, nitrogen-enriched-air, for the separation of carbon dioxide from hydrocarbons, and the separation of hydrogen from various petrochemical and oil refining streams. Membranes are needed that provide a resistance to interaction with process components or contaminants, provide ... 08/17/06 - 20060180022 - Ion transport membrane module and vessel system with directed internal gas flow An ion transport membrane system comprising (a) a pressure vessel having an interior, an inlet adapted to introduce gas into the interior of the vessel, an outlet adapted to withdraw gas from the interior of the vessel, and an axis; (b) a plurality of planar ion transport membrane modules disposed ... 08/10/06 - 20060174762 - Gas separation membrane module assembly A gas-separation membrane module assembly and a gas-separation process using the assembly. The assembly includes a set of tubes, each containing gas-separation membranes, arranged within a housing. The housing contains tube sheets that divide the space within the housing into three separate, gas-tight spaces, with the tubes mounted in the ... 07/27/06 - 20060162554 - Method and system for separating a component from a multi-component gas A method and apparatus for separating a component from a multi-component feed gas stream has a flow conduit (14) having a semi-permeable section (15) that permeates the component to be separated from feed gas stream (12). A sweep gas is provided at a first velocity on the permeate sides of ... 07/20/06 - 20060156920 - Novel separation membrane made from blends of polyimide with polyamide or polyimide-amide polymers Membranes are used to separate fluids for the production of oxygen-enriched air, nitrogen-enriched-air, for the separation of carbon dioxide from hydrocarbons, and the separation of hydrogen from various petrochemical and oil refining streams. Membranes are discussed that provide a resistance to interaction with process components or contaminants, which can lead ... 06/22/06 - 20060130647 - Carbon monoxide production process The present invention provides for a process for producing carbon monoxide. A feed gas stream of hydrogen, carbon monoxide and carbon dioxide is directed to a membrane unit which separates the feed gas stream into two streams. The stream containing carbon monoxide is directed to second membrane unit for further ... 06/08/06 - 20060117949 - Novel method of making mixed matrix membranes using electrostatically stabilized suspensions Mixed matrix composite (MMC) membranes with minimal macrovoids and defects are provided by the current invention. MMC Membranes are needed that have minimal macrovoids and defects, provide consistent and good selectivity and permeability performance, provide the mechanical strength required to withstand high membrane differential pressures, and exhibit sufficient flexibility and ... 06/01/06 - 20060112822 - Apparatus and method for separating gases An apparatus and method to separate a mixture of gases—such as carbon dioxide and methane—by an inorganic membrane comprising a ceramic support and a silica layer made from a silicon elastomer sol. The apparatus and method can efficiently separate the gaseous mixture and can also cope with the extreme conditions ... 05/25/06 - 20060107830 - Mixed matrix membrane with mesoporous particles and methods for making and using the same A mixed matrix membrane for separating gas components from a mixture of gas components is disclosed. The membrane comprises a continuous phase polymer with inorganic porous particles, preferably molecular sieves, interspersed in the polymer. The polymer has a CO2/CH4 selectivity of at least 20 and the porous particles have a ... 05/11/06 - 20060096453 - Noble metal gas barriers A method for separating gases within a barrier, and a metallic barrier separating the gases is provided for use in solid oxide fuel cells, or SOFC. A network of pores can vent steam formed within the barrier by the reaction of hydrogen diffusing from one side and oxygen diffusing from ... 05/04/06 - 20060090644 - System and method for selective separation of gaseous mixtures using hollow fibers A system and method for separation of a gas, e.g., carbon dioxide, from a gaseous mixture using a hollow fiber membrane module. The module contains an absorbent solution that is effective in absorbing the gas for an extended period, e.g., eight hours, without regeneration or replacement. The absorbent solution is ... 04/06/06 - 20060070522 - Desublimator for aluminum chloride The invention relates to a desublimator for producing particulate, solid aluminum chloride from aluminum chloride vapor, which is formed by a vessel which is closed on all sides and has vertical walls and a feed point for the aluminum chloride vapor and an offtake point for the solid aluminum chloride, ... 04/06/06 - 20060070521 - Removable duct liner The invention relates to liners for air ducts. Specifically, the invention is an article comprising a porous polymeric membrane layer and, optionally, a support layer, in which the article is a duct liner adapted to be removably positioned within a porous air duct. The liner may also be used in ... 02/02/06 - 20060021502 - Cross-linked polybenzimidazole membrane for gas separation A cross-linked, supported polybenzimidazole membrane for gas separation is prepared by reacting polybenzimidazole (PBI) with the sulfone-containing crosslinking agent 3,4-dichloro-tetrahydro-thiophene-1,1-dioxide. The cross-linked reaction product exhibits enhanced gas permeability to hydrogen, carbon dioxide, nitrogen, and methane as compared to the unmodified analog, without significant loss of selectivity, at temperatures from about ... 10/27/05 - 20050235825 - Method for making carbon membranes for fluid separation There is disclosed a method of making a high performance carbon membranes from polymer membranes. The method comprising the steps of exposing polymer precursor compounds to a polar organic liquid before pyrolysis of the exposed polymer precursor compounds. ... 10/20/05 - 20050229779 - Method for preparing ddr type zeolite membrane, ddr type zeolite membrane, and composite ddr type zeolite membrane, and method for preparation thereof A DDR type zeolite membrane formed on a substrate includes silica as a main component. The DDR type zeolite membrane separates at least one type of a gas component from a mixed gas containing at least two types of gases selected from a group consisting of carbon dioxide (CO2), hydrogen ... 10/20/05 - 20050229778 - Method for separating a membrane and device for separating a membrane for enriching at least one gas component in a gas flow A membrane separation process for the enrichment of at least one gas component in a gas flow, especially for the oxygen enrichment of the air and/or for the enrichment of carbon dioxide using a membrane separation device (10), which is a part of a membrane separation unit (2) and includes ... 10/13/05 - 20050223891 - Oxy-fuel combustion process Production of oxygen-enriched gas streams is disclosed herein. Air streams contact an oxygen-selective mixed conductor particularly a perovskite material whereby oxygen is retained or adsorbed on the perovskite and can be employed in a variety of processes such as in combusting a fuel gas, heat recovery and boiler related operations. ... 09/22/05 - 20050204915 - Porous gas permeable material for gas separation A gas separator, a method for producing the gas separator, and a method for separating gases based on a property of inelasticity of the gases. The inventive gas separator is a permeable porous material for separating a mixture of gases by selectable pore size exclusion, comprising pores formed with at ... 07/07/05 - 20050145107 - Polyolefin membrane with integrally asymmetrical tructure and process for producing such a membrane Process for producing an integrally asymmetrical hydrophobic polyolefinic membrane with a sponge-like, open-pored, microporous support structure and a separation layer with a denser structure, using a thermally induced liquid-liquid phase separation process. A solution of at least one polyolefin is extruded to form a shaped object. The solvent used is ... 06/30/05 - 20050139066 - Mixed matrix membranes with small pore molecular sieves and methods for making and using the membranes A mixed matrix membrane is provided which comprises a continuous phase organic polymer and small pore molecular sieves dispersed therein. The molecular sieves have a largest minor crystallographic free diameter of 3.6 Angstroms or less. When these molecular sieves are properly interspersed with a continuous phase polymer, the membrane will ... 06/30/05 - 20050139065 - Mixed matrix membranes with low silica-to-alumina ratio molecular sieves and methods for making and using the membranes A mixed matrix membrane is provided which comprises a continuous phase organic polymer and small pore alumina containing molecular sieves dispersed therein. The molecular sieves have a silica-to-alumina molar ratio of less than 1.0, more preferably, less than 0.3, and most preferably less than 0.1. In some cases, the molecular ... ### FreshPatents.com Support |